(PHP >= 5.4.0, PECL intl >= 2.0.0) Get transliterator IDs

(PHP 5.5.0, PHP 7, PECL >= 3.0.0a1) Create GMT (UTC) timezone

(PHP 5.5.0, PHP 7, PECL >= 3.0.0a1) Clear a field or all fields

(PHP 5.5.0, PHP 7, PECL >= 3.0.0a1) Get timezone ID

(PHP 5 >= 5.3.0, PHP 7, PECL intl >= 1.0.0) Get current collation strength

(PHP 5.5.0, PHP 7, PECL >= 3.0.0a1) Check if this zone has the same rules and offset as another zone

(PHP 5 >= 5.3.0, PHP 7, PECL intl >= 1.0.0) Returns a correctly ordered and delimited locale ID

(PHP 5 >= 5.3.0, PHP 7, PECL intl >= 1.0.0) Parse string to a timestamp value

(PHP >= 5.4.0, PECL intl >= 2.0.0) Create an inverse transliterator

(PHP 5.5.0, PHP 7, PECL >= 3.0.0a1) Whether this objectʼs time is before that of the passed object